Dental apparatus



(No Model.)

H.'W. PARSONS. DENTAL APPARATUS.

Patented May 3, 1887.

I-IIIII WITNESSES TZJMZZMQQ ATTORNEYS,

mglon. Dv O UNITED STATES PATENT OFFICE.

HORACE W. PARSONS, OF WAMEGO, KANSAS.

DENTAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 362,310, dated May 3,1887-.

Application filed January 7, 1851' Serial No. 223,668. (No model.)

the mouths of patients during dental opera-' .tions with a dentalengine, and comprising special constructions and combinations of parts,substantially as hereinafter described, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 represents a view in elevation of my newly-invented apparatusas applied to or combined with a dental engine, and showing the whole asin operation upon apatient. Fig. 2 is a sectional longitudinal View,upon a larger scale, of a certain mouth-piece for supplying heated airto the mouth of the patient, and forming part of the invention. I

A is a dental engine of the ordinary or any suitable construction, 12being its main shaft, and 0 its working-arm, consisting of a tube andcontained flexible rotating shaft that carries the burr or other tool,d, used by the dentist in operating upon the teeth in the mouth of apatient, (represented at B.)

O is an exhaustpump, which may be an ordinary cylinderand-piston oneoperated by a crank, e, on the main shaft of the dental en- 'gine, orwhich may be operated by any suitable motor.

D is' a glass or other bottle, forming a salivareceptacle, closed by arubber or other tight stopper, and which is connected with the pump Gbya rubber tube, f, for the purpose of exhausting the air from thesaliva-receptacle D, inorder that the vacuum created in said receptaclewill have the effect of causing the saliva to pass from the mouth of thepatient through another tube, 9, applied at its one end to the patientsmouth and entering at its other end the receptacle or stopper thereof,said stopper being suitably perforated to receive the ends of the tubesf 9, that conmeet with said receptacle. In this receptacle and the tubef of course connects with the suction portion of the pump, while anothertube, h, which may also be a rubber one, connects at its one end withthe air-discharge outlet of the pump, so that the air ejected by thepump will be forced out through the tube h. This tube h connects at itsother or outlet end, subject to control by a cock, 2', with a closeair-receptacle, E, into which the exhausted air, as it is discharged bythe pump, is delivered, and in which it is heldunder compression andallowed to pass at the will of the operator to and through a flexibletube, 70, which is connected with the arm 0 of the dental engine, andwhich serves to convey the air to the tooth being operated on, and maybe manipulated by the dentist as required.

The air is heated in its passage through or before leaving said tube asfollows: The tube It is constructed or provided at its outer end with amouth-piece, G, .composed in part of a small metal tube, las, forinstance, of iron, brass, silver, or platinum, or there might be a coilof iron or platinum wire, m, around the said tube, so that by passing acurrent of electricity over this tubel it becomes warm or hot, asdesired, whereby the air being forced through the tube by the air-pump,or it might be by a syringe-bulb instead, becomes hot or heated beforepassing into the mouth of the patient. Around the tube Z, or its wirecovering, is a suitable non-conducting and indestructible material, it,such as asbestus cloth, and over or round this again a finishing-shield,o, to the insulated mouth-piece, that thus may be readily handled. Thiselectric air-heating mouthpiece at or upon the discharge end of theflexible tube need be but short and of very small diameter-say of thethickness of a pencil and about two inches long. The current ofelectricity may be passed over it by or from a battery, I, and throughwires or connections 1" from opposite poles of the battery, and thecurrent be-made or broken, as required, by a push-pin, a, in or on themouth-piece. temperature produced may be regulated by The varying thenumber of battery-cells in use or by changing the tube of themouth-piece from or to silver, brass, iron, or platinum. The heated airthus discharged from the tube It may not only be used on the tooth toease pain and facilitate the dental operation, but it may also be usedfor other purposes-ms, for instance, to blow away chips or dust from orbefore the burr d, or to dry the root, canal, or cavities by inserting afine gold point; or the tube It might be used for atomiziug purposes onthe patient.

While I prefer to heat the air issuing from the tube It in the mannerdescribed, it might be otherwise heated, if desiredas, for instance, bypassing it through a suitably-arranged coil heated by a flame.

Again, while the air might be forced through the tube It direct, and insuch case the close air-receiver E be dispensed with, it is preferred touse the interposed air-receiver E to hold the air under pressuredischarged by the pump, and whereby increased force may be given to theissuing current of air.

The close air-receiver E is in the form of a cylinder fitted with aplunger 01' piston, to, which is forced in or down by a spring, b-- as,for instance, between a collar or pin on the piston-rod e and a fikedyoke, it, through which said rod is free to slide. Air discharged by thepump and entering the vessel E forces the piston up or out against thetension of the spring, thus retaining within said vessel or receiver asupply of com pressed air for future use, and by graduating thepiston-rod where it passes through the yoke, as shown atw, the extent ofpressure at which the air is held in the receiver may readily bedetermined.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with an air-pump, of a saliva receptacle and an airreceiver, connected, respectively, with the suction portion of the pumpand the air-discharge outlet there of, the said receptacle and receiverbeing provided with tubes adapted to lead to the mouth of the patient,substantially as herein shown and described.

2. The combination, with a dental engine and an air-pump operatedtherefrom, of a saliva-receptacle connected with the pump and providedwith a tube adapted to lead to the mouth of the patient, and anair-receiver, also connected to the pump and provided with a pipeadapted to lead to the mouth of the patient, substantially as hereinshown and described.

3. The combination, with the dental engine, of an air-pump, anair-receiver holding the air discharged by the pump under pressurc,avalve for controlling the discharge of air from said receiver, a tube orduct adapted to convey such discharged air from the receiver to theouter or tool-carrying end of the working-arm of the engine and to themouth of the patient,- and means, substantially as described, forheating theair prior to its discharge from said tube, essentially asspecified.

4. The combination, with the working-arm c ofa dental engine, and anair-pump, ofan air tube having an insulated month-piece, G, and apuslrpin, s, and attached to the said workingarzn c, and an electricbattery and its connections with the mouth-piece, substantially asherein shown and described.

5. The mouthpiece G, composed of the metal tube Z, the non-couductingand indestructible material n, and the shield 0, and provided with thepush-pin s, substantially as herein shown and described.

6. In apparatus for treating patients during denial operations, the aircompressing vessel E, adapted to receive a forced current of air and todischarge the same as required, in corn bination with the piston orplunger a within said vessel, the spring 1), operating to actuate saidplunger against the incoming current of air, and means, substantially asdescribed, for determining the pressure of the air within the vessel E,essentially as and for the purposes herein set forth.

HORACE \V. PARSONS.

\Vitnesses:

L. B. Lumen, Gnoncn Them.

